Start speccing out predefined authentcation classes
Revert "Start speccing out predefined authentcation classes"

This reverts commit 9d90a2a6f4cdfb7c468262d2e1e273b3113d3e10.
Merge branch 'master' of git://github.com/joestump/django-ajax
Authentication now uses a base class. Add AJAX_AUTHENTICATION setting.
Merge pull request #42 from cam-stitt/master

Authentication base class with setting